config: allow dynamic configuration of cookie settings (#1267)

config/options.go

@@ -12,6 +12,7 @@ import (
 	"reflect"
 	"sort"
 	"strings"
+	"sync/atomic"
 	"time"
 
 	"github.com/cespare/xxhash/v2"
@@ -986,3 +987,25 @@ func min(x, y int) int {
 	}
 	return y
 }
+
+// AtomicOptions are Options that can be access atomically.
+type AtomicOptions struct {
+	value atomic.Value
+}
+
+// NewAtomicOptions creates a new AtomicOptions.
+func NewAtomicOptions() *AtomicOptions {
+	ao := new(AtomicOptions)
+	ao.Store(new(Options))
+	return ao
+}
+
+// Load loads the options.
+func (a *AtomicOptions) Load() *Options {
+	return a.value.Load().(*Options)
+}
+
+// Store stores the options.
+func (a *AtomicOptions) Store(options *Options) {
+	a.value.Store(options)
+}